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第716章 LC震荡电路,电子三级管,电容(2 / 2)

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现在电话筒的送话筒也叫电喇叭。

“我们的送话筒声音太小,无论我们怎么大声说话,声音也大不了多少,归根到底是电流变化幅度不大,也导致振膜也不会变化太大,其实这电喇叭,声音还可以很大,大到几里外都能听到。”

胡湘向他们说道。

李冶,戴维,钱发拉,那见过后世的大喇叭,也许就认为电话话筒就该是那大的声音。

“广大村民注意了,那个狗日的偷了我家的鸡…不得好死…”

胡湘又想起遥远的熟悉的声音。

胡湘向他们提示,要利用这真空电子三级管电流放大功能,制作出扬声器,大喇叭!

我胡湘也准备过把“村长”的瘾!

三人听到胡湘的想象,这真是一种扩大声音的好方法。

“三公子,您的话,真让我茅塞顿开,我马上命令电话研究所研究,”钱发拉拱手道,

又说道:“我们还发现了一个存电的装置,还请三公子看看它的用处,不是那种蓄电池靠物质氧化还原反应得到电流,我们给它取名电容,”

“电容!”

“其实挺简单的,就是两块大小一样的方铝板平行放置,两端通上电后,那就正电端带正电,负电端带负电,把电源断开后,把它并接灯泡,灯泡就会点亮,就是放电太快了,”

钱发拉介绍道。

“后来,我们把电感线圈,电容并连,蓄电池,三个并连,先让蓄电池给电容供电,然后断开,电感和电容成一个闭合回路,”

“然后电容放电,给电感充电,电感得电,电容放完电,电感在放电,给电容充电,这样一直循环下去,”

小主,这个章节后面还有哦,请点击下一页继续阅读,后面更精彩!“循环下去了吗,”李冶问道。

“没有,很快电路上一点电流都没有,导线有电阻,只要有电流,就转为热了,我再画张它的示意图,”

说罢,钱发拉又画了幅电路图。

胡湘看着像高中时代的LC电路图。

线圈符号胡湘知道,电感线圈其实就是螺旋线圈。

原来高中物理课用两道横杠表示电容,就是两块金属板的意思。

胡湘也突然明白过来!

这里钱发拉也是用两横杠符号表示电容。

“我在想,它们来回转换的频率是多少,和那些因素有关,三公子说过,电流的速度和光速一样快,那电流在这个回路的转换频率,我在想,也应该是很高,很高的频率,”

“嗯!特别高,”

胡湘说完,陷入沉思中,胡湘感觉他们掌握的电磁知识,已经不少了。

要不要告诉他们,其实还有一种神奇的物质, 他们能研制出来呢!

胡湘对那种神奇现象,它的原理也不是很清楚。

钱发拉还在讲这电路,电磁的神奇。

“初级线圈,次级线圈只要匝数比够大,十几伏交流电压,也能升高到万伏电压,高电压太可怕了,我想到了一种防护网,把铁丝网通上交流高压电,哈哈!谁敢触碰!”,

……

“我有个绝密研究计划,它的研究,我们希望保密,任何人不得告知,只对我负责,”

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